TOML to JSON Converter
Convert TOML to JSON instantly with our free online tool.
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How to Convert TOML to JSON
Simply paste your TOML content into the input panel on the left and click the Convert button. Your JSON output will appear instantly in the right panel. You can then copy the result to your clipboard or download it as a file.
What is TOML?
TOML (Tom's Obvious Minimal Language) is a configuration file format that's easy to read due to its clear semantics. It's widely used in Rust (Cargo.toml), Python (pyproject.toml), and many other modern tools. TOML maps unambiguously to a hash table.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. JSON is the standard format for APIs and is supported by virtually every programming language.
Common Use Cases
Developers convert TOML to JSON when working with APIs that only accept JSON, when debugging configuration files, when migrating from TOML-based configs to JSON-based systems, or when using tools that don't support TOML.
Frequently Asked Questions
Is my TOML data secure when using this converter?
Yes, absolutely. All conversions happen directly in your browser using JavaScript. No data is ever sent to our servers or any third-party services.
What TOML features are supported?
Our converter supports TOML 1.0 features including tables, arrays of tables, inline tables, multi-line strings, dates, and all data types.
Can I convert Cargo.toml files?
Yes. Cargo.toml files are standard TOML 1.0 documents, so dependency tables, feature lists, and workspace sections parse like any other TOML. TOML datetime values are returned as ISO 8601 strings.
Why convert TOML to JSON?
JSON is more widely supported by APIs and tools. Converting TOML to JSON helps when integrating with systems that don't support TOML natively.
Continue with the data, not the directory
Move between JSON, YAML, and TOML while keeping format semantics visible.
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Convert TOML 1.0 configuration such as Cargo.toml or pyproject.toml to YAML.
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Validate JSON, control YAML formatting, compare option changes, and export configuration-ready output locally in your browser.